How good it would be if we knew about the merits and demerits of the child even before birth. This will make it easier for children to develop and group them. Meanwhile, scientists have discovered more than 1,200 small genetic differences related to personality, including traits that determine whether someone is a psychopath or not. An international team led by psychologist Ted Schwaba of Michigan State University has identified 1,260 DNA variants associated with the so-called Big Five personality traits – Extraversion, Agreeableness, Conscientiousness, Neuroticism and Openness.
According to personality test, there is very little impact on the behavior of each person. Not only this, each variant affects only one specific quality. A study conducted on more than 10 lakh people has revealed that up to 16 percent of the variation in a person's personality score is due to DNA variants that appear before that person is born.
Although the study did not specifically examine psychopathy, it suggests that these links could help the medical field determine who may be at greater risk of mental health problems in the future. It has also come to light that genetic variants associated with neuroticism predict spending more time in hospital, which is important for doctors and health researchers.
Why do people take risks
The study may also help researchers understand why some people take more risks in life or change careers suddenly. According to the study, variants related to openness to experience are associated with income and job change, which is important for vocational researchers. Scientists have discovered 1,260 genetic variants associated with the 'Big Five' personality traits, including variants associated with psychopathic behavior.
Studied on 1.14 million people
The researchers revealed that their objective was to find out which common differences in DNA were linked to the Big Five personality traits, and whether those links persist across people of different countries, age groups and families. The international team combined the DNA and personality questionnaires of 46 patient groups. In total they studied between 611,000 and 1.14 million people, making it the largest study of its kind.
1,260 DNA variants found
They scanned millions of common DNA differences and then checked the results by comparing some participants with their relatives, so that shared family life could not be mistaken for a genetic effect. They found 1,260 DNA variants related to personality, of which 824 were not clearly linked to these traits until now.
Why does depression, anxiety and anorexia occur?
This new study, published in Nature, showed that this was especially true for people who 'internalize' problems, where the problem is turned inward, which often leads to depression, anxiety and anorexia. The same pattern was seen in a variety of conditions, including bipolar disorder, schizophrenia, ADHD, autism, borderline personality disorder and obesity.
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